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Highly pure dilute solution of sodium in...

Highly pure dilute solution of sodium in liquid ammonia

A

shows blue colour

B

exhibits electrical conductivity

C

forms sodium amide

D

produces `H_2` gas

Text Solution

Verified by Experts

The correct Answer is:
A, B
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In the following questions , a statement of assertion (A) is followed by a statement of reason (R). A: Dilute solutions of alkali metal in liquid ammonia are paramagnetic in nature R: Formation of ammoniated cations takes place when alkali metals dissolve in ammonia.

Freshly prepared, bright blue coloured solution of sodium in liquid ammonia can be used to reduce the organic functional moieties. In this, the actual reducing species is

Knowledge Check

  • Highly pure dilute solution of sodium in ammonia

    A
    Shows blue colouration due to solvated electrons
    B
    Shows electrical conductivity due to both solvated electrons and solvated sodium ions
    C
    Shows red colouration due to solvated electrons but a bad conductor or electricity
    D
    Produces hydrogen gas or carbonate

  • Freshly prepared pure dilute solution of sodium in liquid ammonia:

    A
    shows copper-bronze colour
    B
    occupy large volume than that from the sum of the volume of Na and `NH_(3)` (l).
    C
    reduces the `Geh_(4)`to `GeH_(2)^(-)`
    D
    produces sodium amide and hydrogen gas with rusty iron wire.

  • Highly pure dilute solution of sodium in ammonia :

    A
    shows blue colouration due to solvated electrons
    B
    shows electrical conductivity due to both solvated electrons as well as solvated sodium ions
    C
    shows red colouration due to solvated electrons but a bad conductor of electricity
    D
    produces hydrogen gas or carbonate

    • Similar Questions

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    Which of the following statements is not ture about the dilute solutions of alkali metals in liquid ammonia ?

    Hydrogenation of the above compound in the presence of sodium in liquid ammonia gives -

    Assertion : As the very dilute solutions of alkali metals in liquid ammonia are made more concentrated, the molar conductivity at first decreases, reaching a minimum at about 0.05 molar, thereafter , it increases again. Reason : The molar conductivity of the saturated solution of the alkali metals in liquid ammonia at -33^(@)C is comparable to that of a metal.

    The wrong statement regarding the solutions of alkali metals in liquid ammonia

    On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?

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